TOSHIBA TC74LVX138FT

TC74LVX138F/FN/FT
TOSHIBA CMOS Digital Integrated Circuit
Silicon Monolithic
TC74LVX138F,TC74LVX138FN,TC74LVX138FT
3-to-8 Line Decoder
Note:
The TC74LVX138F/ FN/ FT is a high-speed CMOS 3-to-8 line
decoder fabricated with silicon gate CMOS technology. Designed
for use in 3-V systems, it achieves high-speed operation while
maintaining the CMOS low power dissipation.
This device is suitable for low-voltage and battery operated
systems.
When the device is enabled, 3 Binary Select inputs (A, B and
C) determine which one of the outputs ( Y 0 - Y7 ) will go low.
When enable input G1 is held low or either G 2 A or G2B is
held high, decoding function is inhibited and all outputs go high.
G1, G 2 A , and G2B inputs are provided to ease cascade
connection and for use as an address decoder for memory
systems.
An input protection circuit ensures that 0 to 5.5V can be
applied to the input pins without regard to the supply voltage.
This device can be used to interface 5V to 3V systems and two
supply systems such as battery back up. This circuit prevents
device destruction due to mismatched supply and input voltages.
Features
•
xxxFN (JEDEC SOP) is not available in
Japan.
TC74LVX138F
TC74LVX138FN
TC74LVX138FT
High-speed: tpd = 5.5 ns (typ.) (VCC = 3.3 V)
•
Low power dissipation: ICC = 4 μA (max) (Ta = 25°C)
•
Input voltage level: VIL = 0.8 V (max) (VCC = 3 V)
VIH = 2.0 V (min) (VCC = 3 V)
•
•
Power-down protection provided on all inputs
∼ tpHL
Balanced propagation delays: tpLH −
•
Pin and function compatible with 74HC138
Weight
SOP16-P-300-1.27A
SOL16-P-150-1.27
TSSOP16-P-0044-0.65A
1
: 0.18 g (typ.)
: 0.12 g (typ.)
: 0.06 g (typ.)
2007-10-17
TC74LVX138F/FN/FT
Pin Assignment (top view)
A
1
16
VCC
B
2
15
Y0
C
3
14
Y1
G2 A
4
13
Y2
G 2B
5
12
Y3
G1
6
11
Y4
Y7
7
10
Y5
GND
8
9
Y6
IEC Logic Symbol
A
B
C
G1
G2 A
G2B
Bin/Oct
(1)
(2)
(3)
(6)
(4)
1
2
4
0
1
&
4
5
2
3
EN
(5)
6
7
(15)
(14)
A
B
C
Y0
Y1
(13)
(12)
(11)
Y2
(1)
(2)
(3)
Dmux
0
2
0
1
0
G
7
2
3
4
5
Y3
Y4
(10)
(9)
Y6
G1
G2 A
Y7
G2B
Y5
(7)
(6)
(4)
&
EN
(5)
6
7
(15)
(14)
(13)
(12)
(11)
(10)
(9)
(7)
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
Truth Table
Inputs
Enable
Outputs
Select
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
H
H
H
H
H
H
H
H
Selected Output
G1
G2 A
G2B
C
B
A
L
X
X
X
X
X
X
H
X
X
X
X
H
H
H
H
H
H
H
H
None
X
X
H
X
X
X
H
H
H
H
H
H
H
H
None
H
L
L
L
L
L
L
H
H
H
H
H
H
H
Y0
H
L
L
L
L
H
H
L
H
H
H
H
H
H
Y1
H
L
L
L
H
L
H
H
L
H
H
H
H
H
Y2
H
L
L
L
H
H
H
H
H
L
H
H
H
H
Y3
H
L
L
H
L
L
H
H
H
H
L
H
H
H
Y4
H
L
L
H
L
H
H
H
H
H
H
L
H
H
Y5
H
L
L
H
H
L
H
H
H
H
H
H
L
H
Y6
H
L
L
H
H
H
H
H
H
H
H
H
H
L
Y7
None
X: Don’t care
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2007-10-17
TC74LVX138F/FN/FT
System Diagram
15
14
A
1
13
12
Select
inputs
B
2
11
10
C
3
9
7
G2 A
Enable
inputs
G 2B
G1
4
Y0
Y1
Y2
Y3
Y4
Data
outputs
Y5
Y6
Y7
5
6
Absolute Maximum Ratings (Note)
Characteristics
Symbol
Rating
Unit
Supply voltage range
VCC
−0.5 to 7.0
V
DC input voltage
VIN
−0.5 to 7.0
V
DC output voltage
VOUT
−0.5 to VCC + 0.5
V
Input diode current
IIK
−20
mA
Output diode current
IOK
±20
mA
DC output current
IOUT
±25
mA
DC VCC/ground current
ICC
±75
mA
Power dissipation
PD
180
mW
Storage temperature
Tstg
−65 to 150
°C
Note: Exceeding any of the absolute maximum ratings, even briefly, lead to deterioration in IC performance or even
destruction.
Using continuously under heavy loads (e.g. the application of high temperature/current/voltage and the
significant change in temperature, etc.) may cause this product to decrease in the reliability significantly even
if the operating conditions (i.e. operating temperature/current/voltage, etc.) are within the absolute maximum
ratings and the operating ranges.
Please design the appropriate reliability upon reviewing the Toshiba Semiconductor Reliability Handbook
(“Handling Precautions”/“Derating Concept and Methods”) and individual reliability data (i.e. reliability test
report and estimated failure rate, etc).
Operating Ranges (Note)
Characteristics
Symbol
Rating
Unit
Supply voltage
VCC
2.0 to 3.6
V
Input voltage
VIN
0 to 5.5
V
VOUT
0 to VCC
V
Operating temperature
Topr
−40 to 85
°C
Input rise and fall time
dt/dv
0 to 100
ns/V
Output voltage
Note: The operating ranges must be maintained to ensure the normal operation of the device.
Unused inputs must be tied to either VCC or GND.
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TC74LVX138F/FN/FT
Electrical Characteristics
DC Characteristics
Characteristics
H-level
Symbol
VIH
⎯
Input voltage
L-level
H-level
VIL
VOH
Output voltage
⎯
IOH = −50 μA
VIN = VIH
IOH = −50 μA
or VIL
IOH = −4 mA
IOL = 50 μA
L-level
VOL
Ta = −40 to
85°C
Ta = 25°C
Test Condition
VCC (V)
Min
Typ.
Max
Min
Max
2.0
1.5
⎯
⎯
1.5
⎯
3.0
2.0
⎯
⎯
2.0
⎯
3.6
2.4
⎯
⎯
2.4
⎯
2.0
⎯
⎯
0.5
⎯
0.5
3.0
⎯
⎯
0.8
⎯
0.8
3.6
⎯
⎯
0.8
⎯
0.8
2.0
1.9
2.0
⎯
1.9
⎯
3.0
2.9
3.0
⎯
2.9
⎯
3.0
2.58
⎯
⎯
2.48
⎯
2.0
⎯
0
0.1
⎯
0.1
VIN = VIH
IOL = 50 μA
or VIL
IOL = 4 mA
3.0
⎯
0
0.1
⎯
0.1
3.0
⎯
⎯
0.36
⎯
0.44
Unit
V
V
Input leakage current
IIN
VIN = 5.5 V or GND
3.6
⎯
⎯
±0.1
⎯
±1.0
μA
Quiescent supply current
ICC
VIN = VCC or GND
3.6
⎯
⎯
4.0
⎯
40.0
μA
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2007-10-17
TC74LVX138F/FN/FT
AC Characteristics (input: tr = tf = 3 ns)
Characteristics
Symbol
VCC (V)
tpLH
Propagation delay time
Propagation delay time
Min
Typ.
Max
Min
Max
15
⎯
7.1
13.8
1.0
16.5
50
⎯
9.6
17.3
1.0
20.0
15
⎯
5.5
8.8
1.0
10.5
50
⎯
8.0
12.3
1.0
14.0
15
⎯
8.7
16.3
1.0
19.5
50
⎯
11.2
19.8
1.0
23.0
15
⎯
6.8
10.6
1.0
12.5
50
⎯
9.3
14.1
1.0
16.0
15
⎯
8.8
16.0
1.0
18.5
50
⎯
11.3
19.5
1.0
22.0
15
⎯
6.9
10.4
1.0
11.5
50
⎯
9.4
13.9
1.0
15.0
2.7
50
⎯
⎯
2.5
⎯
2.5
3.3 ± 0.3
50
⎯
⎯
2.5
⎯
2.5
2.7
tpHL
3.3 ± 0.3
tpLH
2.7
⎯
(G1- Y )
Propagation delay time
tpHL
3.3 ± 0.3
tpLH
2.7
⎯
( G2 - Y )
Output to output skew
CL (pF)
⎯
(A, B, C- Y )
3.3 ± 0.3
tpHL
tosLH
tosHL
(Note 1)
Ta = −40 to
85°C
Ta = 25°C
Test Condition
Unit
ns
ns
ns
ns
Input capacitance
CIN
(Note 2)
⎯
4
10
⎯
10
pF
Power dissipation capacitance
CPD
(Note 3)
⎯
34
⎯
⎯
⎯
pF
Note 1: Parameter guaranteed by design.
(tosLH = |tpLHm − tpLHn|, tosHL = |tpHLm − tpHLn|)
Note 2: Parameter guaranteed by design.
Note 3: CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating
current consumption.
Average operating current can be obtained by the equation:
ICC (opr) = CPD・VCC・fIN + ICC
Noise Characteristics (Ta = 25°C, input: tr = tf = 3 ns, CL = 50 pF)
Characteristics
Limit
Symbol
Test Condition
Quiet output maximum dynamic VOL
VOLP
⎯
3.3
⎯
0.5
V
Quiet output minimum dynamic VOL
VOLV
⎯
3.3
⎯
−0.5
V
Minimum high level dynamic input voltage VIH
VIHD
⎯
3.3
⎯
2.0
V
Maximum low level dynamic input voltage VIL
VILD
⎯
3.3
⎯
0.8
V
VCC (V)
Typ.
Unit
Input Equivalent Circuit
INPUT
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TC74LVX138F/FN/FT
Package Dimensions
Weight: 0.18 g (typ.)
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TC74LVX138F/FN/FT
Package Dimensions (Note)
Note:
This package is not available in Japan.
Weight: 0.12 g (typ.)
7
2007-10-17
TC74LVX138F/FN/FT
Package Dimensions
Weight: 0.06 g (typ.)
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2007-10-17
TC74LVX138F/FN/FT
RESTRICTIONS ON PRODUCT USE
20070701-EN GENERAL
• The information contained herein is subject to change without notice.
• TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor
devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical
stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of
safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of
such TOSHIBA products could cause loss of human life, bodily injury or damage to property.
In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as
set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and
conditions set forth in the “Handling Guide for Semiconductor Devices,” or “TOSHIBA Semiconductor Reliability
Handbook” etc.
• The TOSHIBA products listed in this document are intended for usage in general electronics applications
(computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances,
etc.).These TOSHIBA products are neither intended nor warranted for usage in equipment that requires
extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or
bodily injury (“Unintended Usage”). Unintended Usage include atomic energy control instruments, airplane or
spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments,
medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in his
document shall be made at the customer’s own risk.
• The products described in this document shall not be used or embedded to any downstream products of which
manufacture, use and/or sale are prohibited under any applicable laws and regulations.
• The information contained herein is presented only as a guide for the applications of our products. No
responsibility is assumed by TOSHIBA for any infringements of patents or other rights of the third parties which
may result from its use. No license is granted by implication or otherwise under any patents or other rights of
TOSHIBA or the third parties.
• Please contact your sales representative for product-by-product details in this document regarding RoHS
compatibility. Please use these products in this document in compliance with all applicable laws and regulations
that regulate the inclusion or use of controlled substances. Toshiba assumes no liability for damage or losses
occurring as a result of noncompliance with applicable laws and regulations.
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2007-10-17